The backup log (from BE SBS 7.3) indicates the following:

Blank Presentation.pot - File infected with virus: "PP97M/Tristate.gen".
Blank Presentation.pot - Attempt to clean file failed.
Blank Presentation.pot - File is infected and will be skipped.

Does BE provides any information about the infected file location? In
this
particular case Blank Presentation.pot exists in several user subfolder,
so
it would be nice to know exactly which file caused the above message.

Wojtek Dziegielewski